U.S. Composting Council

TPS Lab is the 11th approved US Composting Council Seal of Testing Assurance ( USCC STA ) laboratory for all participating STA composters in the U.S. and Canada! You can find us listed at http://compostingcouncil.org/labs/.

Compost Testing Protocols

Review our Online Ordering Page for Compost Testing for a complete list of test descriptions and protocols.


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